2102001101221 has 8 divisors (see below), whose sum is σ = 2506734232704. Its totient is φ = 1723379784720.

The previous prime is 2102001101219. The next prime is 2102001101227. The reversal of 2102001101221 is 1221011002012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2102001101221 - 2¹ = 2102001101219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102001101227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6527953570 + ... + 6527953891.

It is an arithmetic number, because the mean of its divisors is an integer number (313341779088).

Almost surely, 2^{2102001101221} is an apocalyptic number.

It is an amenable number.

2102001101221 is a deficient number, since it is larger than the sum of its proper divisors (404733131483).

2102001101221 is a wasteful number, since it uses less digits than its factorization.

2102001101221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13055907491.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 2102001101221 its reverse (1221011002012), we get a palindrome (3323012103233).

The spelling of 2102001101221 in words is "two trillion, one hundred two billion, one million, one hundred one thousand, two hundred twenty-one".